I'm 33 weeks along in my first pregnancy. Since 30 weeks I have become properly exhausted. My iron levels were tested and found to be within acceptable normal range. Basically no matter how much sleep I get, I just want more of it. I'm always tired. I sleep around the clock. The only time I get a burst of energy is in the middle of the night. The rest of the time, I just want to sleep. I literally spend all day in bed sometimes, snoozing away.